<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script>
			var a=123;
			var b="123";
			console.log(a + a + a + b);
			console.log(b + a + a + a);
		</script>
	</body>
</html>
